Question

What is the slope of a line passing through (3, 4) and (5,8)?
1/2
2
2/4
4/2

Answer 1

2

Explanation:

To find the slope of a line given two points
`(x_1,y_1) \text{ and } (x_2,y_2)` you could use the formula:
`(y_2-y_1)/(x_2-x_1) \text{ or even } (y_1-y_2)/(x_1-x_2)`.

However, what I'm fixing to do is equivalent to that except I think easier to remember.

You line up the points vertically and subtract, then put 2nd difference over 1st difference.

Like this:

( 3 , 4)

- ( 5 , 8)

---------------

-2 -4

So the slope is -4/-2=4/2=2.

The slope is 2.